Everton winger Yannick Bolasie feels it is "frightening" the way Chinese Super League clubs are acting in the transfer market, amid talk interest from China has unsettled Chelsea striker Diego Costa.
It has been claimed Costa has been offered a £30m a year deal to move to China and the striker will play no part for Chelsea this weekend against Leicester City.
The Spain international is reported to have rowed with a coach over his fitness and as a result has not trained for three days; he has not travelled to Leicester.
Bolasie insists Costa is a key man for the Blues, while also explaining he feels the money being splashed around by Chinese clubs is frightening.
"Diego Costa is a problem for any defender. He is strong, quick and doesn't stop running", Bolasie said on BBC Radio 5 live.
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"He sets the tone for all the other Chelsea players.
"It's frightening the way the Chinese market is acting right now", the Everton star added.
Chelsea have already lost two players to Chinese clubs this month, with Oscar joining Shanghai SIPG and John Obi Mikel linking up with Tianjin TEDA.
It remains to be seen whether the Blues are prepared to lose Costa as well in the current transfer window.
